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, (N'oModeL) 7' E. S. LAUGHINGHOUSE.

FEED MECHANISM PORSAW MILLS.

NO. 284,443. r Patented Sept. 4,1883;

WITNESSES: 4 IITVENTOR:

j??? i Q ATTORNHYSJ UNITED I STATES PATENT OFFICE.

EDWARD sfLAUeHINeHoUsE, on KINsroN, NORTH CAROLINA.

FEED MECHANISM oR SAW-MILLS.

I SPECIFICATION forming part of Letters Patent No. 284,443, dated September 4, 1883.

Application filed May 26, 1883. (No model.)

, Motionslfor Saw-Mills, of which the following is a full, clear,and exact description, reference being had to the annexed drawings, forming part of thisspecification.

, versed.

This invention relates to a feed-motion in which a shifting friction-gear is combined with the saw-arbor for securing a reversible rotary motion for operating the carriage.

In the drawings, Figure l is a side elevation of part of a sawmill, showing my invention; and Fig. 2 is a plan view of the same.

A indicates'the saw-arbor, supported on the frame 13, and provided with the band-pulley O, for receiving motion to drive the saw D. The arbor A, at its end opposite to the saw, is

provided with a driving friction wheel or plate, E, having a concave recess, F, at the center, and a frictional surface formed by minute concentric grooves G. A shifting friction-gear, H, is feathered on a shaft, I, and arranged with its periphery in contact with the frictional surface of the wheel E, and is connected to aclutch-f0rk, J, which is adapted to slide onarod, K, supported by the brackets L M, inywhich the shaft I is journaled. p r p In the lower part of the frame B is journaled a rock-shaft, N, having a short arm, 0, connected to a lever, I, by a connectingbar, Q, and a long arm, R, connected to the clutchfork J by the bar S. 'WVith this construction a slight movement of the lever P will suffice to shift the gear H diametrically across the face of the wheel E, and as it crosses the center the direction of its rotation will here- WVhen the gear H is adjusted at the center of the wheel E, the concave recess F will prevent the Wheel from acting on the gear,

. and the latter and its shaft I will become motionless. The shaft I is provided with a bevelpinion, T, which meshes with a large bevelgear wheel, U, secured to the shaft V, which is adapted to engage with and communicate motion to the carriageWby the means usually employedforthat purpose.

The bracket L is "formed in two parts, Z m,

adapted to slide one on the other, and con nected by a guidepin and spiral spring, a, for securing a constant degree of friction be tween the wheel E and gear H.

With the above construction the carriage W may be moved forward and then back by simply adjusting the lever P in the manner above indicated, and the speed of the carriage can be varied, as required, by moving the gear H nearerto or farther from the center of the wheel E.

What I claim is-* 1. In a saw-mill, the combination, with the I saw-arbor having a friction wheel secured thereon, of the shifting friction-gear arranged in contact with said wheel, the shaft supporting said gear and provided with a pinion, the

carriage driving-shaft having a wheel mesh ing with said pinion, and means for shifting the saidgear diametricallyacross the said friction-wheel, substantially as shown and described.

2. In a saw-mill, the combination, with the saw-arbor having the friction-wheel E, formed with a concave recess, E, at the center, of the shaft I, supported in suitable brackets at the side of said wheel, the friction-gearH, feathered on said shaft, and means for shifting the gear H to the center of said wheel E, substantially as and for the purpose specified.

3. In a saw-mill, the combination, with the saw-arbor having therfriction-wheel E,formed with, minute frictional grooves G, of the shaft I, the frictiongear H, adapted to slide thereon, the clutch-fork J, the guide-rod K, the rockshaft N, connected by a long arm to the clutch-fork, and the lever P, connected by a short arm to the rock-shaft, substantially as shown and described. I

4. In a saw-mill, the combination, with the saw-arbor having the friction-wheel E, of the shaft I, the friction-gear H and means for shifting said gear, and the bracket L, supporting one end of shaft I, and having a springtensioned part, Z, for securing a constant degree of friction between the wheel E and gear H substantially as shown and described.

EDWARD S. LAUGHINGHOUSE.

Witnesses:

A. G. LYNE,

SOLON O. KEMoN. 

